(19)
(11) EP 1 207 301 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
17.09.2003 Bulletin 2003/38

(43) Date of publication A2:
22.05.2002 Bulletin 2002/21

(21) Application number: 01127130.1

(22) Date of filing: 15.11.2001
(51) International Patent Classification (IPC)7: F04B 27/10, F04B 27/08
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 17.11.2000 JP 2000351182
09.03.2001 JP 2001066857

(71) Applicant: Kabushiki Kaisha Toyota Jidoshokki
Kariya-shi, Aichi-ken (JP)

(72) Inventors:
  • Fukanuma, Tetsuhiko
    Kariya-shi, Aichi-ken (JP)
  • Kawaguchi, Masahiro
    Kariya-shi, Aichi-ken (JP)
  • Kayukawa, Hiroaki
    Kariya-shi, Aichi-ken (JP)
  • Uneyama, Hiroshi
    Kariya-shi, Aichi-ken (JP)
  • Mera, Minoru
    Kariya-shi, Aichi-ken (JP)

(74) Representative: Leson, Thomas Johannes Alois, Dipl.-Ing. 
Tiedtke-Bühling-Kinne & Partner GbR, TBK-Patent, Bavariaring 4
80336 München
80336 München (DE)

   


(54) Variable displacement compressor


(57) A variable displacement compressor includes a supply passage for supplying refrigerant gas from a discharge chamber to a crank chamber and a bleed passage for bleeding the refrigerant gas from the crank chamber to a suction chamber. An oil separator is connected to a drive shaft and is located in the bleed passage. The oil separator rotates together with the drive shaft to centrifugally separate lubricant oil from the refrigerant gas that flows in the bleed passage. An oil chamber is formed in a compressor housing for receiving the separated oil. The pressure in the oil chamber is equal to or greater than the pressure in the crank chamber. The lubricant oil rapidly returns to the crank chamber through a return passage.






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